Looks to have a WWII head. The rear cargo area has been diamond plated.

https://medford.craigslist.org/cto/d/1951-willys-cj3a-jeep/6693552515.html

“1951 Willys CJ3A Jeep, L-134 engine, T90 manual 3 speed transmission, Dana 18 transfer case, Dana 25 front differential, Dana 44 rear differential. Engine runs very well but has 50 psi compression (a bit weak). Shifts great, drives good. “Mile Marker” MM front locking hubs. Solid body and frame, no rust. New carter carburetor, new gas tank, like new soft top, great tires. Basically a real nice rig.”

May need some brake work.

https://grandrapids.craigslist.org/rvs/d/1948-willys-jeep-cj2a/6678059539.html

“Selling this jeep. It has been in storage for a few years. Fully restored with soft top and doors. Includes original hard top (not restored) and a few spare parts.

New battery, spark plugs, and ignition coil or condenser. Brake pedal is loose, and likely only needs a flush.
No trades.”

UPDATE: Still Available.

(01/25/2018) No pics provided.

https://seattle.craigslist.org/sno/cto/d/1947-willies-cj2a-project/6684059270.html

“47 Willies CJ2A project. Have the tittle. Needs to be restored put back together. Currently tore down. Rolling chassis started sanding frame down, original Willies scripted tub in good condition on chassis. Custom roll cage mounted. Scripted original tailgate, hood, fenders. Comes with two Buick 225 motors. Complete motor ran when pulled. Original green seats and two bucket off roading type seats. Solid good condition windshield and wipers with motor. Original speedometer, after market gauges, 3 speed transmission with over drive. Power steering.”

UPDATE: Still Available.

(07/07/2018) It does not include the top.

https://moseslake.craigslist.org/pts/d/willys-jeep-project/6686935072.html

“Willys Jeep project. It is a semi rolling project with 3/4 ton Ford axle partially mounted under it. Tera flex rear shackles. Wrangler springs. No motor or tranny. Hard top minus hard top window frame. Has 3a windshield frame and MB hood. TIRES IN PICTURE NOT INCLUDED has a set of small rollers.”

Runs and drives?

https://kansascity.craigslist.org/mcy/d/1948-willys/6687214205.html

“Just got it today on a trade. 1948 WILLYS Flathead, 4 Cylinder, No Rust, Rhino Lined Tub, Total Down to Frame Restoration by the previous owner, Runs Great, New BF Goodrich 32.11.50”

Has updates. Missing the steps.

https://sacramento.craigslist.org/cto/d/1946-willys/6687544628.html

“1946 Willys. Has strong running 225 odd fire V6. Everything works the way it should. Have full top and doors for it as well as the bikini top. Cadillac steering upgrade. Has small body lift with 33’s. I have some parts to upgrade to that will come with it. Dana 44’s front and rear as well as a T-19 4-speed with granny low w/ dana 20 t-case. This thing is fun to drive. Obviously, being a 46′, no smog or anything. I have the title, just paid years registration, ready to go! Will send more pics if requested.
$7000 obo!! Possible trade for newer, more family friendly Jeep. No other trades!!!”